Hair brush



FIG. 1 is a perspective view of a hair brush showing my new design, bristles being continuous over the span indicated by dot-dash line and the conventional power cord broken away for ease of illustration;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left side elevational view; the right side is a mirror image thereof;

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a hair brush, substantially as shown and described. 